Name
Color Contexts -- routines for allocating colors (deprecated).
Synopsis
#include <gdk/gdk.h>
struct GdkColorContext;
struct GdkColorContextDither;
enum GdkColorContextMode;
GdkColorContext* gdk_color_context_new (GdkVisual *visual,
GdkColormap *colormap);
GdkColorContext* gdk_color_context_new_mono (GdkVisual *visual,
GdkColormap *colormap);
void gdk_color_context_free (GdkColorContext *cc);
gulong gdk_color_context_get_pixel (GdkColorContext *cc,
gushort red,
gushort green,
gushort blue,
gint *failed);
void gdk_color_context_get_pixels (GdkColorContext *cc,
gushort *reds,
gushort *greens,
gushort *blues,
gint ncolors,
gulong *colors,
gint *nallocated);
void gdk_color_context_get_pixels_incremental
(GdkColorContext *cc,
gushort *reds,
gushort *greens,
gushort *blues,
gint ncolors,
gint *used,
gulong *colors,
gint *nallocated);
gint gdk_color_context_query_color (GdkColorContext *cc,
GdkColor *color);
gint gdk_color_context_query_colors (GdkColorContext *cc,
GdkColor *colors,
gint num_colors);
gint gdk_color_context_add_palette (GdkColorContext *cc,
GdkColor *palette,
gint num_palette);
void gdk_color_context_init_dither (GdkColorContext *cc);
void gdk_color_context_free_dither (GdkColorContext *cc);
gulong gdk_color_context_get_pixel_from_palette
(GdkColorContext *cc,
gushort *red,
gushort *green,
gushort *blue,
gint *failed);
guchar gdk_color_context_get_index_from_palette
(GdkColorContext *cc,
gint *red,
gint *green,
gint *blue,
gint *failed); |
Description
The GdkColorContext type is used for allocating groups of colors.
It is now deprecated in favor of the gdk_colormap_*() functions described in
the Colormaps and Colors
section.
Details
struct GdkColorContext
struct GdkColorContext
{
GdkVisual *visual;
GdkColormap *colormap;
gint num_colors; /* available no. of colors in colormap */
gint max_colors; /* maximum no. of colors */
gint num_allocated; /* no. of allocated colors */
GdkColorContextMode mode;
gint need_to_free_colormap;
GdkAtom std_cmap_atom;
gulong *clut; /* color look-up table */
GdkColor *cmap; /* colormap */
GHashTable *color_hash; /* hash table of allocated colors */
GdkColor *palette; /* preallocated palette */
gint num_palette; /* size of palette */
GdkColorContextDither *fast_dither; /* fast dither matrix */
struct
{
gint red;
gint green;
gint blue;
} shifts;
|
struct GdkColorContextDither
struct GdkColorContextDither
{
gint fast_rgb[32][32][32]; /* quick look-up table for faster rendering */
gint fast_err[32][32][32]; /* internal RGB error information */
gint fast_erg[32][32][32];
gint fast_erb[32][32][32];
}; |
enum GdkColorContextMode
typedef enum
{
GDK_CC_MODE_UNDEFINED,
GDK_CC_MODE_BW,
GDK_CC_MODE_STD_CMAP,
GDK_CC_MODE_TRUE,
GDK_CC_MODE_MY_GRAY,
GDK_CC_MODE_PALETTE
} GdkColorContextMode; |
gdk_color_context_new_mono ()
gdk_color_context_free ()
gdk_color_context_get_pixel ()
gdk_color_context_get_pixels ()
gdk_color_context_get_pixels_incremental ()
gdk_color_context_query_color ()
gdk_color_context_query_colors ()
gdk_color_context_add_palette ()
gdk_color_context_init_dither ()
gdk_color_context_free_dither ()
gdk_color_context_get_pixel_from_palette ()
gdk_color_context_get_index_from_palette ()